Revolving firearm.



STMUENOFFICE.

. OTTO W. RINGQVIST, OF FITCHBURG, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO MARY ELIZABETH JOHNSON, TRUSTEE, FITGHBURG, MASSACHUSETTS.Y

REvoLvING FIRLARM.Y

ATo Vall whom 'it may concern:

Be it known that LOTTO W. RINGQvIs'r, a

citizen of. the United States, residing at Fitchburg, in the county of Worcester Vand Commonwealth of Massachusetts, have inventedV a new and useful Improvement -in vRevolving Firearms, of which the following is a'specification, accompanied by drawings forminga part of the same, in whichh Figure l represents a side view of a revolving fire arm embodying my invention, the side plate Vhavingbeen/removed to dis- Yclose the lock mechanism. Figs. 2 and 3l are side views, partly in section, Vof the lock I5 mechanism and the cylinder latch mechanism. Fig. 4 is a detachedperspeotive view of the cylinder latch. Fig., 5 is adetached perspective view Vof, the trigger spring.

Similar reference letters and figures refer to similar partsin the different views.

My present invention relates to a Alatching mechanismv for locking the cylinder of a rec volving fire arm in-position during the 0peration of firing; and it consists in the construction and arrangement ofparts as hereinafter described and pointed outin the annexed claims.

Referringl to the accompanying drawings,y

1 denotes the framework of a revolving fire arm, 2 the barrel, 3 the revolving cylinder l' provided with notches 4 by which it is engaged by a cylinder latch for the purpose of holding the cylinder from rotating.v

5 denotes a pivoted trigger which is actuated by a U-shaped trigger spring 6 held `in a recess between the trigger guard 7 and i' c the frame of the Vfire arm.

Pinched between the frame "of the fire arm and the trigger spring 6 is a cylinder latch 8 consisting of a narrow elastic strip of steel,

shown in perspective view in Fig. 4. The end 9v of the cylinder latch is slightly crimped and adapted to be inserted between the frame of the fire armand the trigger guard, as shown in Figs. 1, 2 and V3, thereby holding the latch 8 from longitudinal movement.

rllhe latch 8 is bent vdownwardly at 10' and i rearwardly at 11, 'and again upwardly at 12,

with its upper end curved into a'semi-circular hook 13. The downwardly bent portion of the latch between l0 and .13 is extended into a recess 14 of vthe trigger, as shown in Figs. 2 and 3, and the hook Vportion 13 is inserted in a mortise .15 in the framework, and is arrranged to pass through the mortise 15 and specification of Letters Patent.

enter one of the notches 4 of the revolving fire arm.

The trigger 5 carries a spring actuated dog 16V having its exposed end turned upwardly andprovided onits upper side with arounded or cam shaped surface 16? ATliat portion of the cylinderv latch inclosed in the Patented Aug. 17, 1909. Y Application filed october 15, 1904. serial No. 228,586.

recess 14 of the trigger is provided' with a mortise 17, through which :the exposed end of the dog 16 enters,.as shownin Fig. 2, with the tip of the dog 16V resting uponr the upper surface of the cylinder latch at .the

forwardend of the mortise 17. In the nor- Y mal position of the trigger, as shown in Fig.

1, the hookv shaped endv 13v of the cylinder thel mortise 15 and en-V the revolving cylinder vfrom latch extends through ters one of the notches y4 of cylinder, thereby holding the l rotation. As the trigger is pulled back on its pivot 1.8 in the direction of the arroww19,

the engagement of the spring actuateddog 16 with: the upper surface of 'the Vcylinder latch, will cause the latch V to be depressed until the hook shaped end 13'is withdrawn` into the mortise 15, thereby releasing the cylinder as shown in Fig. 2. The continued rocking movement of the trigger 5 in the dif rection of the arrow 19 will draw the dog'v 16 back until its tip passes through the mortise 17, allowing the elasticity of the cylin- .der latch 8 to again carry its hooked end 13 through `the mortise 15 of theframe, as shown in Fig. 3, and Yinto the position to again engage one of the notches 4 of the cylinder, and allow the cylinder latch to again hold the cylinder from rotating, 'at thetime when the trigger has reached its rearward position to release the hammer in the act of firing. The hooked end of the cylinder latch therefore engages the cylinder when the lock -inechanism is in its nor' mal position or before the trigger is drawn back, as represented in Fig. 1, and it again engages the cylinder when the trigger has reached its rearward position or at the period of firing, releasingy the cylinder during the intermediate movement of the trigger to allow the cylinder to be rotated in the usual manner in arms of this class by means of the actuating cylinder pawls 20. When the trigger is released its rocking motion is reversed bythe action of the trigger spring 6 restoring the trigger to the position shown 1n Fig. 1. During the forwardv movement of the trigger the rounded surface 16t of the spring actuated dog is carried against the under side of the cylinder latch 8 attlie forward end ofthe inortise 17,- and-the pressure of the rounded surface lffagainst the cylinder latch will cause the dog 16 to be forced into` the trigger against the tension of the spiral sprlngn 1Q", thereby allowing the tip of the dog to pass through the niortise 17'wl1en the Spring 16 will force the.idom.f0r.ward.Tandil cause its tip to overlap the upper surface of thqcylinder latchrin the.posit ion Ashown in Fig. l.

They `dog 1G is provided withi airecess .a which is engaged, bya pin 7) inthe trigger, shown inllgs. 2 and 8,and thus the longitudinal nioveinentof thepdog 16 by the" at itsfforward end tothe .frame andhaving` do\v1 iward rearward and upward zbends, `with its upperrearwardend arranged to engage ythe cylinder and with the downwardly i bent'portion extending through a recess 111- theV trigger belowgthedpivot, and yieldingA means carried by. said .trigger arranged to engage `said cylinder latch in `said recess below Vsaid `pivot.

2. In a revolving lire arin, the conibinaf tion with a rotatable cylinder and a pivoted trigger, of an elastic cylinder latch attached. at its forward end to tlieitraine and having downward,l rearward and upward bends, with ite` upper rearward end arranged to engage the cylinder7 with the downwardly bent portion extending through a .recess in 'the trigger below the pivot and 'provided 40 withV a i i longitudinal opening, and yielding means carried by Said trigger arranged to engage said cylinderlatch @attheafor'wardend of ,said opening;`

31.` Inva revolvingrfire arm, the combina# tion;withairotatable cylinder and a pivoted trigger, of an elast-ic cylinderlatch attached at its forward. endi toithefranle andi eatende` ingiearwardly parallel with the 4frame, bonte downward, rearward i and. upward with `ita 50 upper reanwardend arranged toengageithe cylinder, anda slidable springfactuatcdidog carried in said trigger and arranged tsubstantially in `the lineofithe `dowmvardly bent portion of said cylinderla-tch, whereby Asaid dog `is movedlongitudinally 4by contact -with *i said downwardly-bent portion during theV forward inovenienti of the trigger.

Dated thistenth "day of OctobeiliQOfl.`

OTTO W. RINGQVIT. i

Witnesses CHAS. E.- Farm GUS'r-Ar ELLs'rRcm. 

